An engineer is, in essence, a problem-solver. November 10, 2010 U3b-L1 DRILL – Write the sentence and answer True or False Constraints are new products, systems, or processes that have never existed before. An engineer is, in essence, a problem-solver. Feedback is used to regulate or control a technological system. The capital below is required and must be supplied by students during this unit. Name each: 1. False – Constraints are limits. 2. True 3. True Protractor Compass Ruler

UNIT 3 – Engineering Design U3b-L1 UNIT 3 – Engineering Design Engineering, the systematic application of mathematical, scientific, and technical principles, produces tangible end products that meet our needs and desires. BIG IDEA What is a systematic application of something? – an organized or established procedure

UNIT 3 – Engineering Design U3b-L1 UNIT 3 – Engineering Design Getting familiar with the Big Idea The Design Process Core Technologies Mechanical Engineering Electrical Engineering Reverse Engineering Fluid Engineering Thermal Engineering Optical Engineering Materials Engineering LESSONS

The Engineering Design Process U3b-L1 The Engineering Design Process PURPOSE OF LESSON To enable students to understand and apply the design process.

Every TECHNOLOGY is developed U3b-L1 Technology as a System Technology – performing a by using an object that is not part of the human body. System – each technology has parts and each part has a with all other parts and to the whole. Every TECHNOLOGY is developed through a SYSTEM task relationship

task system? relationships? U3b-L1 Car Engine What is the it performs? How is this a What are the task system? relationships? 1. transfers energy 2. components working in relationship

Technology as a System DESIRED / UNDESIRED Components: EXAMPLE: Radar U3b-L1 Technology as a System Components: Goals Humans develop technology to meet needs Each artifact meets more than one goal Inputs Resources that go into a system and are used by it Processes Design Process, Production Process, Mgt. Process Outputs Technological systems are designed to produce specific outputs. Manufactured products, constructed structures, communicated messages, transported people or goods. Feedback and Control Using information about the outputs to regulate the system. EXAMPLE: Radar Developed to determine the position and speed of aircraft. Major impact on military strategies during WW2. Today, it contributes to safe, reliable air transportation and predicts the weather. DESIRED / UNDESIRED

A great way to express information is with a Graphic Organizer U3b-L1 Technology as a System A great way to express information is with a Graphic Organizer HOW DO WE ALTER THINGS IF IT DIDN’T? HOW DO WE KNOW IT WORKED??? Technological system: GOALS & Control FEEDBACK INPUTS PROCESSES OUTPUTS GOALS

EXAMPLE Goal: create a system to send new, sealed CDs to Wal-Mart. U3b-L1 EXAMPLE Goal: create a system to send new, sealed CDs to Wal-Mart. Inputs: People, time, capital, energy, etc. Processes: design, production, management Outputs: CDs Feedback: Do the CDs work? Are they sealed correctly? Do they break easily? Control: Straighten printing of labels Pay workers appropriately Buy better conveyor belt motor

HOMEWORK On a clean sheet of paper, write complete sentences: U3b-L1 HOMEWORK On a clean sheet of paper, write complete sentences: In what ways is technology a system? List and describe the five major components of a technological system. Select a technological device that you use and complete the following: Device: Major Inputs: Processes: Design, Production, and Management Desired Outputs: Undesired Outputs: DONE ALREADY